Blog · Power of Eight
Ashta uses clusters of eight because "Power of Eight" claims are specific enough to test — not because group intention has been proven. The honest answer is that we do not yet know whether groups of eight produce measurable effects under controlled conditions. That uncertainty is the reason to measure, not to believe.
"Power of Eight" is associated with Lynne McTaggart's claim that small groups focusing a shared intention can produce meaningful effects for a target person or situation. The phrase is memorable, the practice is simple, and the reports around it are often emotionally compelling. But reports are not the same as evidence. Ashta's starting point is not "group intention works." It is: here is a claim with a defined social unit, a repeatable ritual form, and measurable outcomes — which makes it suitable for testing.
The number eight matters because it is part of the claim. If a popular method says eight people are enough to create a distinct effect, then eight becomes the experimental unit. That also prevents a common failure in contested research: changing the claim after the result is known. If eight is the claimed dose, test eight. None of this means eight is special in nature. It may simply be socially convenient — large enough to feel collective, small enough to coordinate, enough to raise attention, empathy and expectancy. Or it may do nothing measurable beyond ordinary support. We do not know yet. That is the point.
The broader literature on distant healing and intercessory prayer is mixed and contested. Early reviews found some positive trials but stressed methodological limits; larger, more rigorous studies have often been disappointing. The STEP trial, a large multi-centre study of intercessory prayer in cardiac-bypass patients, found no benefit from being prayed for under uncertainty — and patients who knew they were receiving prayer had a higher complication rate. A Cochrane review of intercessory prayer found no strong support for clinical use. The Power-of-Eight claim has a further problem: there does not appear to be a strong body of rigorous, independent, peer-reviewed replication specifically testing McTaggart-style groups of eight. Public-facing claims are not the same as independent replication with pre-registered endpoints.
So what would Ashta test? First, define the target — wellbeing, pain, sleep, mood, task performance or a biological marker — knowing that outcomes easy to move by expectation need careful blinding. Second, define the comparison: no-intention, sham-intention and active-support controls, so the test distinguishes "being cared about" from "distant intention at a specific time." Third, pre-register the analysis and decide in advance what counts as success, so ten measured outcomes cannot become one cherry-picked headline. Fourth, publish the null. If clusters of eight do not outperform controls, that result is valuable.
Ashta's interest in groups of eight is therefore methodological, not devotional. Eight is a clean, portable unit for testing a contested claim across many groups, targets and settings — and it fits the human scale of a cluster of eight. A careful experiment may find nothing, or an effect explained by expectation, relationship or attention, or a small anomaly that needs replication. Any of those is more useful than belief without measurement. The honest sentence is: we use eight because the claim says eight, and because claims should meet the discipline of their own specificity.
